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getuid.2: Add NOTES explaining 32-bit system calls added in Linux 2.4 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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Michael Kerrisk 2010-11-22 08:50:30 +01:00
parent dd09a14ed5
commit 80978cba04
1 changed files with 17 additions and 1 deletions
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18
man2/getuid.2
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@ -23,7 +23,7 @@
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Historical remark, aeb, 2004-06-05
.TH GETUID 2 1993-07-23 "Linux" "Linux Programmer's Manual"
.TH GETUID 2 2010-11-22 "Linux" "Linux Programmer's Manual"
.SH NAME
getuid, geteuid \- get user identity
.SH SYNOPSIS
@ -54,6 +54,22 @@ UNIX V7 introduced separate calls
.BR getuid ()
and
.BR geteuid ().
.SH NOTES
The original Linux
.BR getuid ()
and
.BR geteuid ()
system calls supported only 16-bit user IDs.
Subsequently, Linux 2.4 added
.BR getuid32 ()
and
.BR geteuid32 (),
supporting 32-bit IDs.
The glibc
.BR getuid ()
and
.BR geteuid ()
wrapper functions transparently deal with the variations across kernel versions.
.SH "SEE ALSO"
.BR getresuid (2),
.BR setreuid (2),